So you want visualize RSS feed from your Discourse forum to your Discord server. To do that you need a Discord Bot. You can use a hosted bot with an RSS cog and add it to your server or install a self-hosted bot and configure it. I prefer...

Reading time: 1 mins 🕑Likes: 18 ❤

Note: This is not just about Discord usage, but has the list of available feeds at the bottom of 1st post.